0fdad0c0d6
Closes https://github.com/zed-industries/zed/issues/10122 Closes https://github.com/zed-industries/zed/issues/25034 When formatting buffers or reloading them after they change on disk, we performed a diff between the buffer's current contents and the new content. We need this diff in order preserve the positions of cursors and other decorations when updating the buffer's text. In order to handle changes within lines, we would previously compute a *character-wise* diff. This was extremely expensive for large files. This PR gets rid of the character-wise diff, and instead performs a normal line-wise diff. Then, for certain replace hunks, we compute a secondary word-based diff. Also, I've switched to the [`imara-diff`](https://github.com/pascalkuthe/imara-diff) crate, instead of `similar`. Release Notes: - Fixed a hang that could occur when large files were changed on disk or formatted. |
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| LICENSE-GPL | ||